Raking attachment for thresher cylinders



A.,B. WELTY RAKING ATTACHMENT FOR THRESHER CYLINDERS Nov. 16, 1943.

Filed Nov. 16, 1940 Izzy/anto? @www We@ @(6)5 MQW A cmq?. y

Patented Nov. 16, 1943 IRAKING ATTACHMENT FOR THRESHER CYLINDERS AlbertB. Welty, Moline, Ill., assignor to International Harvester Company, acorporation of New Jersey Application November 16, 1940, Serial No.365,951

s claims. (c1. 13o-27) are of such a nature or in such a mass that theycannot easily be fed 'between the cylinder and the concave. Accordingly,threshing elements may be required which have a serrated edge by whichthe crops are raked between the cylinder and the concave. This type ofconstruction is shown in applicants copendingapplication, Serial No.310,012, filed December 19, 1939. In the construction o f theaforementioned application, the` raking means is part of each threshingelement and is not detachable therefrom, so that, if threshingV elementswithout a raking action are desired, it is necessary'that the elementswith the raking action be removed and other elements substitutedtherefor.` By the present application, a raking attachment is providedwhich is easilyv attached to :and detached from the cylinder Iwithoutremoval ofthe normal threshing elements.

An object of the presenty invention is to provide an improved thresherconstruction,

A further object is the provision of an improved raking attachment for athresher construction. I l

Another object is to provide` a raking attachment or element which maybe easily attached to and detached from a threshing cylinder.

According to the present invention, a raking element is provided whichis composed of a pair of angularly related legs, one leg having aserrated edge, the other leg being provided with.

slots so that the element may be secured to a threshing cylinder bybeing held between a threshing element normally carried by the cylinderon the cylinder itself with the slots in the leg of the raking elementreceiving the bolts attaching the threshing element to the cylinder.

In the drawing:

Figure 1 is a sectional view taken through a thresher and showingfeeders, a threshing cylinder, and a concave;

Figure 2 is a sectional view, showing in detail the attachment of thenovel raking element of the present invention to a threshing cylinder;

Figure 3 is a view showing the attachment of the novel raking element ta threshing cylinder and to a threshing element;

Figure 4 is a sectional view taken along the line 4-4 of Figure 1; and,

Figure 5 is a view similar to Figure 2, but showing a modification ofthe present invention.

Figure 1 shows a thresher comprising feeders I0 and II, a threshingcylinder I2, and a concave I3. The concave I3 has a plurality of rubberelements I4 secured thereon by angle velements I5. The threshingcylinder is composed of a plurality of end discs mounted in spacedrelation on a shaft I6, only one disc I'I being shown. The discs have acircumferential flange I8, to which a plurality of threshing elements I9is attached. Each threshing element I9 is formed of an angle bar, ofwhich one leg 20 is in contact with the anges I8 and has bolts 2|extending therethrough by Which the threshing element is secured to theanges I8, only one bolt being shown. The other leg 23 of each threshingelement extends substantially radially outwardly from the discs I'I andhas a coating of rubber 24 on its outer side increasing in thickness;`in a direction away from the ange I8.

lThe elements are what is known as the flail type of bar. The threshingaction takes place between the rubber coatings 24`on the elements I 9and the rubberelements I4 secured to the Y raking elements.

According to the present invention, each rak- 'ing element is formed ofan angle bar 25, of

which one leg 26 has a serrated edge 21 and the other-leg 28 is providedwith a plurality of slots 29 extending inwardly from one edge, only oneslot being shown. As seen in Figures 1 and 2, a pair of raking elementsis mounted at diametrically opposed points on the cylinder I2, and eachelement is secured to the cylinder with the leg 28 held between the leg20 of a threshing element with the slots 29 receiving the bolt 2|. As isto be seen from Figures 1 and 2, the leg 26 of the raking elementextends along the rubber coating 24 of the threshing element and therebyrenders it incapable of a threshing action. As previously stated, theraking elements, by virtue of the serrated edges 2'I, draw in certaincrops which are incapableof themselves being otherwise fed between thecylinder and the concave. The attachment of the raking elements 25 tothe cylinder is relatively easy. Nuts 2Ia on the bolts 2|, securingdiametrically opposed threshing elements 20 to the threshing cylinder,are loosened, and the pair of raking elements are applied to thecylinder as previously stated, the leg 28 fitting between the cylinderand the threshing elements and the slots 29 receiving the bolts 2I. Thenuts 2Ia are then tightened to hold the threshing and raking elements inplace. vWhen the raking elements are to be applied to a threshingelement of the rasp-bar f type. This threshing element A30 comprises -aplurality of transversely extending ribs 3|-,"ofv

which only one is shown. The threshing element 3i) is attached to thetype of threshing cylinder such as shown in the copending application,Serial No. 357,919, filed September 23, 1940, composed of a plurality ofdiscs 32 of polygonal shape, only one being shown. A channel member 33has its legs 34 inserted in slots 32a in the discs 32, being welded orsoldered thereto, vas shown. The base of the channel member 33 serves asa securing means for the threshing element 30, bolts 35 and nuts 36holding the element 33 Von the channel member, only one bolt and nutybeing shown. Each bolt has a flattened head 3'! which nts into a slotin one of the transverselv extending ribs 3|, the head being of thewidth of a rib.

'A raking element is secured to; the channel` member 33 forming themodification of the -Athreshing cylinder, in the same way as in themodification of Figure 1. A 1eg'2il of the raking element is heldbetween the base of the channel -member.33 and the threshing element 29With the bolts 35 being received in slots 23 in the leg 28. The rakingelement used inthis modification difrIt will be apparent that a new andnovel raking construction has` been provided for a thresher `cylinderwhich embodies raking elements Securable to the cylinder by being heldbetween certain of the threshing elements and the cylinder.

y,They are so constructed thatthey may be attached vwithout removal ofthe threshing elef ments. f

The intention is to limit the invention only Within the scope of theappended claims.

What is claimed is: 1. The combination with a threshing cylinder, 5 athreshing element, and a member passing from the cylinder to the elementfor securing them together, of a. raking element having a serratedportion and a portionhavig'aslt extending from one edge; the latterportion Abeing held between the cylinder and the threshing element withthe member connecting them extending Y through the slot in the rakingelement.

2. The combination with a threshing cylinder, a threshing element formedof a rst leg providing a threshing surface and a second leg extendvingat a substantial angle to the rst leg, and a member extending betweenthe cylinder and the `second leg of the threshing element, of a rakingelement formed of a rst leg having a serrated edge and a second leghaving a slot extending from one edge, the second leg being held betweenthe threshing cylinder and the second leg of the threshing element withthe slot in the second leg of the rakingielement receiving thememberextending between the cylinder and the second leg of the threshingelement, the rst leg of raking element extending outwardly along theouter side of the iirst leg of the threshing element. I v u 3. Thecombination with a threshing. cylinder,

a threshing element formed of a rstfleg providing a threshing surfaceand a second legextending at a substantial angle to the first-leg, andattaching means connecting the cylinder and the second leg of thethreshing. element, of a, raking element formed of a rst leg having aserrated vedge and a second leg havingan attaching portion, the secondleg being held between the threshing cylinder and the second leg of thel0-threshing element .with the attaching portion in the second leg ofthe raking'element cooperating with the attaching means connecting thecylin- Ider and the second leg of the threshing element, the rst leg ofthe raking-element extending outwardly along the outer side of thefirst'leg of the lthreshing element.

ALBERT B. WELTY.

